v2026.8.23

Changelog

- General improvement in splat quality
- Add options to delay distortion refinement and per-image intrinsics to improve SfM robustness
- Fixed a bug that causes noise and SH background to oversaturate
- Fixed "Unsupported camera model / distortion tier" error on some datasets
- Support initializing PPISP exposure from EXIF
- Slight training speed improvement on some datasets

Note:
- This release carries difference in training quality intended to be improvement. Please file an issue if you notice significant quality degradation compared to previous versions on your dataset.
- macOS binary is not included in this release since I've returned the Mac I borrowed for testing. If you are a Mac user, you may download binary from [v2026.8.17](https://github.com/harry7557558/spirula-studio/releases/tag/v2026.8.17) release, or build the latest code from source.